Reliance Steel & Aluminum Co. Hosts 2007 Second Quarter Conference Call over the Internet

LOS ANGELES--(BUSINESS WIRE)--

Reliance Steel & Aluminum Co. (NYSE:RS) announced today that it will host a conference call that will be broadcast live over the Internet regarding the Company's second quarter and year-to-date financial results for the period ended June 30, 2007. All interested parties are invited to listen to the web cast on Thursday, July 19, 2007 at 11:00 a.m. Eastern Time. The earnings release will be made available to the public at 9:00 a.m. Eastern Time that same day. David Hannah, Reliance Steel & Aluminum Co.'s Chief Executive Officer will open the conference call and review the operations along with Gregg Mollins, President and Chief Operating Officer. Karla Lewis, Executive Vice President and Chief Financial Officer, will then review the financial results.

Reliance Steel & Aluminum Co.'s 2007 Second Quarter and Year-to-Date
                          Conference Call
Live web cast (listen only mode) at: www.rsac.com/investorinformation

DATE: Thursday, July 19, 2007

TIME: 8:00 a.m. Pacific Time
      10:00 a.m. Central Time
      11:00 a.m. Eastern Time

WEB SITE: http://www.rsac.com/investorinformation or
          http://www.streetevents.com
          Player format: Windows Media

CONTACT: Kim P. Feazle, Investor Relations at (713) 610-9937

For those of you who are not able to listen to the conference call as it occurs, the web cast will remain posted on the Reliance web site at: www.rsac.com/investorinformation through August 19, 2007 and a printed transcript will be posted on the Reliance web site after the completion of the conference call.

Reliance Steel & Aluminum Co., headquartered in Los Angeles, California, is one of the largest metals service center companies in North America. Through a network of more than 180 locations in 37 states and Belgium, Canada, China and South Korea, the Company provides value-added metals processing services and distributes a full line of over 100,000 metal products. These products include galvanized, hot-rolled and cold-finished steel; stainless steel; aluminum; brass; copper; titanium and alloy steel sold to more than 125,000 customers in various industries.

Reliance Steel & Aluminum Co.'s press releases and additional information are available on the Company's web site at www.rsac.com. The Company was named to the 2007 Fortune 500 List and the Fortune 100 Fastest Growing Companies List and the 2007 List of America's Most Admired Companies by Fortune and the 2007 Forbes Platinum 400 List of America's Best Big Companies.

This release may contain forward-looking statements relating to future financial results. Actual results may differ materially as a result of factors over which Reliance Steel & Aluminum Co. has no control. These risk factors and additional information are included in the Company's reports on file with the Securities and Exchange Commission.

Source: Reliance Steel & Aluminum Co.

Released July 12, 2007